2016年4月4日 · It is more challenging to quantify para-valvular versus valvular aortic regurgitation. A. Have abnormal prosthetic valve function. C. Have a small valve compared to the demands of their body and cardiac output. D. Have a benign condition. Mechanical Vs. Bioprosthetic Vs. Autografts. Mechanical Vs. Bioprosthetic Flow.

It is more challenging to quantify para‐valvular versus valvular aortic regurgitation. A. Have abnormal prosthetic valve function. C. Have a small valve compared to the demands of their body and cardiac output. D. Have a benign condition. Mechanical Vs. …

This guideline discusses the role of advanced imaging with transesophageal echocardiography, cardiac computed tomography, and cardiac magnetic resonance in evaluating prosthetic valve structure, function, and regurgitation.

This week we will review the key points for imaging and interpreting prosthetic aortic valve stenosis with echocardiography. Prosthetic Aortic Valve Stenosis: Key Imaging Points. Imaging the heart status post valve repair can be challenging, especially due to the artifact caused by some prosthetic valves.

2021年6月30日 · Significant aortic BPV stenosis was defined as peak prosthetic jet velocity >4 m/s, mean gradient >35 mmHg, EOA <0.8 cm², and DVI <0.25 [8]. The European Association for Cardiovascular Imaging (EACVI) suggests incorporating an increase in mean gradient at follow-up: possible obstruction with an increase in mean gradient of 10-19 mmHg ...

Bioprosthetic valve dysfunction (BVD) and bioprosthetic valve failure (BVF) may be caused by structural or nonstructural valve dysfunction. Both surgical and transcatheter bioprosthetic valves have limited durability because of structural valve deterioration.

Management of patients with high transvalvular bioprosthetic aortic valve gradients requires integration of clinical status, clinical and multimodality imaging findings, and shared decision-making.

2016年10月19日 · Prosthetic valve stenosis is characterized by elevated trans-aortic velocities and gradients; however, it is imperative to realize that the mere presence of an elevated gradient across an aortic valve prosthesis is not sufficient to diagnose prosthesis stenosis.

2024年9月2日 · Mechanical aortic valve replacement (MAVR) is a critical intervention for patients with severe aortic valve disease compromising valvular functionality, including aortic stenosis and regurgitation.

Echocardiography is the key noninvasive modality for evaluation of prosthetic valve structure and function [1]. Transthoracic echocardiography (TTE) is the mainstay for monitoring prosthetic valves and can generally identify normal function as well as evidence of …